Space Travel Affects Astronauts' Eyesight

Long space flights may cause brain and eye abnormalities, doctors find.
0:27 | 03/12/12

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Transcript for Space Travel Affects Astronauts' Eyesight
New research indicates prolonged space travel causes brain and eye damage the study involved 27 astronauts who lived on the International Space Station -- took repeated shuttle flights. MRI that -- the astronauts developed long term abnormality as well being in a weightless environment. Common effects include a buildup of pressure in the brain also changes in the shape of the prior studies have shown that time in space can lead to bone and muscle problems.

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